On the largest scales, the geometry of spacetime is very flat.

最尺度上，时空的几何形状非常平坦。

Oh, I'm gonna go see Kip Thorne give a lecture on subatomic spacetime.

我要去听基普? 索恩博士的亚原子时空讲座。

Terra and Stella now both have a better understanding of how spacetime works.

特拉和史黛拉现对时空工作原理有了更深了解。

Light passing through curved spacetime appears to travel more slowly relative to an external observer.

穿过弯曲的时空的光相对于外部观察者而言传播的速度更慢。

Now we believe that spacetime and objects are the nature of reality as it is.

现我们相信时空和物体是真实存的。

Howard's invention, Sheldon's math, my original theory that spacetime was like a supercooled liquid.

霍华德的发明，谢尔顿的计算，我原创的，将时空视为某种过冷液体的理论。

But that's not some illusion, it's a physical limit to the Universe, a stretching of spacetime.

但这不是什么幻觉，这是宇宙的物理极限，是时空的延伸。

The shortest path in spacetime is defined by the geodesic, the path of light between two points.

时空中最短的路径是由测地线定义的，即光点之间的路径。

Ultimately, making something totally and completely black may only be possible at the extremes of physics and spacetime.

最终，只有物理和时空的极端情况下，才能使某物完全变成黑色。

The finding, from the Laser Interferometer Gravitational-Wave Observatory, or LIGO, showed that extreme gravity can cause ripples in spacetime.

这一激光干涉引力波天文台（LIGO）上的重发现, 表明极限重力可以引发时空涟漪。

All of these seemingly different phenomena can be described by one idea: curvature of space or spacetime.

空间或时空曲率。

That said, cosmologists are pushing the limits of mathematical models to speculate on what, if anything, exists beyond our spacetime.

然而，宇宙学家还 将数学模型的极限向外推，来推断我们的空间时间之外 有什麽存（如果有的话）。

Currently general relativity completely breaks down when spacetime becomes infinitely curved.

目前，当时空变得无限弯曲时，广义相对论就完全失效了。

This is how spacetime provides a reference point for acceleration all by itself.

这就是时空本身如何为加速提供参考点的方式。

As much as I love spacetime physics, we're not talking about  massive ripples in the spacetime fabric here!

尽管我非常喜欢时空物理学，但我们这里讨论的不是时空结构中的巨涟漪！

Finally, the very fabric of reality is torn to its  core, obliterating spacetime itself.

最后，现实的结构被撕裂到其核心，消除了时空本身。

A singularity is a region of infinite gravity, and gravity is the bending of spacetime.

奇点是一具有无限引力的区域，而引力是时空的弯曲。

That's what people mean when they talk about four-dimensional spacetime.

这就是人们谈论第四维度时的意思，也就是时空。

Like photons, gravitational waves travel at the  speed of light as they ripple across spacetime.

与光子一样，引力波时空中以光速传播。

But this is all we know right now, from the best prediction we have, from our best current theory of spacetime.

但这就是我们现所知道的一切了，据我们最好的推测，也参考目前最合理的时空理论。